Aaron Chown/pool photo via AP
In British nobility, you are automatically a prince or princess at birth if you are born to a sitting monarch, are born to the eldest son of a sitting monarch, or are otherwise declared to be so by a sitting monarch.
Since Prince Harry is not the eldest son of the Prince of Wales, any of his children will officially be Lord or Lady Mountbatten-Windsor at birth — according to current rules.
Sitting monarchs can issue Letters Patents, which can change the titles and...

The news came after the bride-to-be confirmed her father, Thomas, would not attend the wedding at Windsor Castle due to illness. Palace officials also confirmed the attendance of 96-year-old Prince Philip, who is recovering from a hip replacement.